<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>index</title>
    <link rel="stylesheet" href="./css/bootstrap.min.css">
    <script src="./js/jquery.min.js"></script>
    <script src="./js/bootstrap.bundle.min.js"></script>
</head>
<body>
<form action="/upload" method="post" enctype="multipart/form-data">
    <input type="file" name="file" value="请选择你要上传的图片">
    <input type="submit" value="上传" class="btn btn-secondary sub-btn" >
</form>
</body>
</html>